Dish-washer



-2 Sheets-Sheet 1.

(No Model.)

M. STONE.

DISH WASHER.

,557. Patented Mar. 13, 1894.

THE NATIONAL LrmocgAPnlNm cour-un?.

(No Model.) 2 sheets-'sheen 2;

M. STONE.

DISH WASHER;Y f

No. 516,557.y YPadzenizd.Mar. 13, 1894..

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STATES- MELVIN STONE, OF SAN DIEGO, CALIFORNIA.

DISH-WASHER.

SPECIFICATION forming part of Letters Patent No. 516,557, dated March13, 1894.

Application lecl .T une 22, 1892.

To all whom it may concern:

Be it known that I, MELVIN STONE, a citizen of the United States, and aresident of the city of San Diego, and county of San Diego, State ofCalifornia, have invented certain new and useful Improvements inDish-Washers, the same being designed as an improvement upon the deviceshown and described in United States Patent No. 467,444, issued to ineJanuary 19, 1892; and I do hereby declare that the followingis a full,clear, and exact description of thesaid invention, which will enableothers skilled in the art to which it appertains to make and use thesame.

This invention has for its object among others to provide a simple,cheap, eflcient and easily-operated device for washing dishes by whichthe Washing of the dishes is accomplished by the spraying of water underpressure.

Other objects and advantages of the invention will appear in thefollowing description and the novel features thereof will beparticularly pointed out in the claims.

The invention is illustrated clearly in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecification and in which-- Figure l is a side elevation of my improveddish washer. Fig. 2 is a central vertical section through the same, onthe line 2-2 of Fig. l showing the plunger in its lowermost position,with cover removed. Fig. 3 is a similar section showing the plunger inits uppermost position. Fig. 4 is a cross section of the cylinder andexterior jacket on the line 4 4 of Fig. 3 showing also the bottom of theplunger with its valve. Fig. 5 is a perspective view of a rack forhandling the plates or dishes when placed in the washer for cleansing.Fig. 6 is a similar view of a crate or fiat receptacle for holdingknives, forks, spoons and other small articles while being cleansed.Fig. 7 is a perspective view of a crate or basket for holding cups andthe like while being cleansed. Fig. 8 is a perspective view of amodified form of tray.

Like letters of reference refer to like parts in all the figures of thedrawings.

Referring now to the details of the drawings by letter A designates theouter jacket or cylinder, B a cylinder or jacket arranged Serial No.437,619. (No model.)

concentric with and within the cylinder or jacket A and extending towithin a short distance of the lower end of said cylinder or jacket andhaving an inclined or conical bottom B as seen best in Figs. 2 and 3,from the center of which extends a discharge pipe B2 which passesthrough an opening in the outer jacket or cylinder A and is providednear its outer end with a cock or faucet K by which the dischargethrough said pipe may be controlled.

C is an inner cylinder concentric with the cylinders A and B andprovided with perforations c through which the water may pass. Thecylinders B and C are supported by and suspended from cap piece or ringA supported on the outer jacket A and which may be integral therewithlif desired as seen in Figs. 2 and 3; and the outer jacket or cylinder Ashould be provided near the top and bottom with apertures o and P as'seen in Figs. l and 2 for the purpose of producing a proper draft inthe furnace chamberM which is located beneath the inclined bottom of thecylinder B within the jacket A and in which is arranged a suitableheater L, a door J being provided in the outer jacket nearitslower endto give access to the heater when desired.

The device is provided with a suitable lid or coverI and with handlesI-I by which it can be readily moved from place to place.

D is a plunger mounted to reciprocate within the inner cylinder C, itsbottom being preferably somewhat inclined as seen in Fig. 3 and providedcentrally with an opening closed by a valve F mounted to open downwardlyas seen in Fig. 3. This plunger has connected therewith the arrns Ewhich are suitably secured thereby, said arms extending above the toplof the device a sufficient distance to connect with the vertical arm N,the upper end of which is pivotally connected thereto outside the outerjacket while its lower end extends nearly to the bottom of the devicewhere it is pivotally connected as at n to the operating lever G whichis pivotally connected as at g to the outer jacket and its upper endextends a sufficient distance to form an operating handle. The dishesbeing Washed are placed in a tray or basket which is supported upon asuitable support as P arranged within the inner cylinder at a point ICOjust above the highest stroke of the plunger as seen in Fig. 3. Thistray or basket may be made in any desired shape or form such as thatdesignated by R in Fig. 5 being in the form of a rectangular receptaclewith notched sides in which are placed the plates or dishes, a suitablehandle being provided to aid in the manipulation 0f the tray or basket.

In Fig. G I have shown a crate or basket S with hinged cover S', and inthis crate or basket are placed knives, forks, spoons or other smallarticles and which are held therein by the closed cover. In Fig. 7 Ihave shown a deeper basket T designed for holding, cups, saucers and thelike and in Fig. 8 I have shown still another form W Which may beemployed for holding any desired article or articles. The forms shown inFigs. G, 7 and 8 have reticulated bottoms and walls for the free escapeof the Water.

W`ith the parts constructed and arranged substantially as herein shownand described, the operation ofthe parts is as follows: Vith the partsin the position in which they are shown in Fig. 3 with the plunger atthe upper ends of its stroke, the valve is open, the dishes are placedin the tray or basket, the Water is placed in the cylinder B and thefire being started when the Water is sufciently heated the plunger iscaused to move downward being fitted to move freely and preferablywithout contact with the walls of the inner cylinder and as the plungeris forced down the valve F is closed and the water in the vessel B andpan Bis forced up into the space between the cylinders B and G and theheated Water and steam forced through the perforations c in the form ofspray under pressure upon the dishes in the tray. In the upward movementof the plunger the valve F is automatically opened and the water in theplunger is discharged. This is repeated at each reciprocation of theplunger. The hot Water being forced through the perforations under greatypressure produces a very efficient cleansing spray which will be forcedthrough every part of the basket or tray T and the dishes therein willbe quickly and perfectly washed; after being washed they may be removedin the tray or basket and allowed to drain While another tray or basketis placed in position.

that I claim as new isl. In a dish washing machine, the comblnation ofan outer jacket, an innerperforated cylinder and an -intermediateimperforate cylinder with closed bottom and a plunger fitted to movewithin the inner cylinder and having an opening in its bottom with ahinged valve therefor7 substantially as specified.

2. In a dish washing machine the combination of an outer jacket, aninner perforated cylinder and an intermediate imperforate cylinder withclosed bottom and a plunger fitted to move within the inner cylinder andhaving an opening in its bottom Withahinged valve therefor, the outerjacket being extended below the cylinders to form aheating chamber,substantially as specified.

3. In a dish washing machine the combination of a jacket, an innerperforated cylinder open at the bottom, an intermediate imperforatecylinder with inclined closed bottom, a plunger with inclined bottomfitted to reciprocate within the inner cylinder and provided with anautomaticallyoperating valve in its bottom and means for reciprocatingthe plunger, substantially as specified.

4l. In a dish washing machine the combination of an outer jacket, aninner perforated cylinder with open bottom, an intermediate imperforatecylinder with inclined bottom having discharge pipe with valve, a ringat the top closing the space between the said jacket and cylinder, aplunger Within the inner cylinder and having an automaticallyoperatingvalve in its bottom and means for reciprocating said plunger,substantially as specified.

In witness whereof I have hereunto affixed my signature in the presenceof two witnesses.

MELVIN STONE.

Vitnesses:

A. B. SMITH, C. F. KIRBY.

